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Formlabs Rigid 4000 Resin - 1L
Rigid 4000 Resin is reinforced with glass to offer very high stiffness and a polished finish. This material is highly resistant to deformation over time and is great for printing thin walls and features.
Supports print resolutions: 100 and 50 microns (printer dependent). Post-curing required. Requires Resin Tank LT for Form 2. Rigid 4000 Resin decreases the lifetime of resin tanks.
Please Note: This product is only compatible with Formlabs 2/3 series printers.
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Product Overview


Formlabs Rigid 4000 v1 Resin 1L
Rigid 4000 Resin is a glass-filled resin that is precise and offers similar stiffness to PEEK and PEKK thermoplastics. It prints with a smooth, matte, polished finish and is highly resistant to heat and chemicals.
Key Specifications


Choose Rigid 4000 Resin for stiff and strong engineering-grade prototypes, general load-bearing applications, and industrial parts that need to withstand significant load without bending.
Compatibility
Printer compatibility
Form 2, Form 3, Form 3+, Form 3B, Form 3B+, Form 3L, Form 3BL
Compatible with these resin tanks
Form 2 LT Tank, Form 3/3B Resin Tank V2, Form 3/3B Resin Tank V2.1, Form 3L/3BL Resin Tank V1, Form 3L/3BL Resin Tank V2
Compatible with these build platforms
Form 3 Build Platform, Form 3 Build Platform 2, Form 3 Stainless Steel Build Platform, Form 3L Build Platform, Form 3L Build Platform 2L
Why Choose Rigid 4000 Resin?
Rigid 4000 Resin is a glass-filled material that has the highest tensile strength in our Engineering Resin Library.
Stiff
Resistant to deformation under a variety of forces, pressures, and torques.
Precise
Produce strong, detailed, and accurate molds or models.
High Thermal and Chemical Resistance
Withstands high temperatures and a variety of chemicals.
Smooth, Matte Finish
Deliver parts that look and feel like a finished product.




Applications
Produce stiff and strong engineering-grade prototypes that can be load-bearing.
Consider Rigid 4000 Resin for:
- Mounts and brackets
- Thin-walled parts
- Jigs and fixtures
- Simulates stiffness of PEEK
Material Properties*
Rigid 4000 Resin
Ultimate Tensile Strength
69 MPaTensile Modulus
4.1 GPaElongation
5.3%Flexural Modulus
3.4 GPaNotched Izod
23 J/mHeat Deflection Temp @ 0.45 MPa
77 ºCThermal Expansion (0-150 °C)
63 μm/m/°CPost-Processing
Form Wash Settings
15 min in IPA
NOTES
Rigid 4000 Resin contains glass particles, which strengthens printed parts. Maintain separate wash buckets to prevent glass particles adhering to parts printed with other resins.
Form Cure Settings
15 min
80 °C
NOTES
For parts printed in an engineering-focused resin (such as those in the Rigid, Tough & Durable, and Flexible & Elastic families), post-curing ensures that the parts reach their optimal mechanical properties and can function as designed. There is only one recommended post-curing time for Rigid 4000 Resin V1.
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